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Welcome to the
QuTiP
users Group. To join, just post a message!
Note this group is for help in installing or using the toolkit, or general idea for the project.
For issues and ideas about, and contributions to, the QuTiP code go to the
QuTiP GitHub
If you need help using QuTiP please look through the old posts before submitting a new one.
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Abdulsalam Odofin
Jul 20
Could not create a Bloch Sphere!
Hello, I am trying to create a Bloch sphere with QuTiP, but could not. I will be glad if you could
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Could not create a Bloch Sphere!
Hello, I am trying to create a Bloch sphere with QuTiP, but could not. I will be glad if you could
Jul 20
Cumali Yaşar
Jul 6
Quantum Teleportation of "cumali" Using CV States
Quantum Teleportation of "cumali" Using CV States
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Quantum Teleportation of "cumali" Using CV States
Quantum Teleportation of "cumali" Using CV States
Jul 6
Mohamed Ahmed Eltohfa
, …
nwla...@gmail.com
5
Jun 30
qutip solver issues
Thank you so much. I was about to write my own solver code to bypass this issue. That will save me a
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qutip solver issues
Thank you so much. I was about to write my own solver code to bypass this issue. That will save me a
Jun 30
fq guo
Jun 29
Seek help!
I want to study optimal control theory. Who can help me?Specially, I want to seek the code of paper
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Seek help!
I want to study optimal control theory. Who can help me?Specially, I want to seek the code of paper
Jun 29
Hussein Shiri
,
Paul Menczel
2
Jun 27
Javascript Error: $ is not defined
Hello, I think you have found a bug in qutip. The HTML progress bar seems to be broken in current
unread,
Javascript Error: $ is not defined
Hello, I think you have found a bug in qutip. The HTML progress bar seems to be broken in current
Jun 27
muhammed khani
Jun 27
Hello, I will be thankful in advance if you help me find the problem. between two discrete
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Hello, I will be thankful in advance if you help me find the problem. between two discrete
Jun 27
ANIRUDDHA CHAKRABORTY
Jun 26
Regarding incorporating gaussian noise in spin evolution
Hi, I am new in Qutip Which master equation is useful for overserving stochastic spin evolution of a
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Regarding incorporating gaussian noise in spin evolution
Hi, I am new in Qutip Which master equation is useful for overserving stochastic spin evolution of a
Jun 26
Andrew Valentini
,
Paul Menczel
2
Jun 15
Basic partial trace and matrix multiplication questions
Hello, The problem here is that qutip keeps track of the "dimensions" of quantum objects.
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Basic partial trace and matrix multiplication questions
Hello, The problem here is that qutip keeps track of the "dimensions" of quantum objects.
Jun 15
Ali Husain
,
Patrick Hopf
2
Jun 9
Two-states to two-states optimal control
Dear Ali, Thank you for your request. There is a neat way to achieve this within the new QuTiP-QOC
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Two-states to two-states optimal control
Dear Ali, Thank you for your request. There is a neat way to achieve this within the new QuTiP-QOC
Jun 9
Benjamin Butler
Jun 7
Discrepancy between representation of Pauli operators and states
Hi there, I recently started using QuTiP, and I'm working through the "Quantum mechanics
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Discrepancy between representation of Pauli operators and states
Hi there, I recently started using QuTiP, and I'm working through the "Quantum mechanics
Jun 7
Ardit Thaqi
May 14
Sesolve for Time-Dependent Hamiltonians
Hi everybody, Hope this finds you well. Currently I want to see the dynamics of my system which is
unread,
Sesolve for Time-Dependent Hamiltonians
Hi everybody, Hope this finds you well. Currently I want to see the dynamics of my system which is
May 14
Simon Cross
,
ANIRUDDHA CHAKRABORTY
2
May 13
Rationalize QuTiP's GitHub Teams
i am new member of the group. how can i shoot qsn i have query regarding simulation On Mon, May 13,
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Rationalize QuTiP's GitHub Teams
i am new member of the group. how can i shoot qsn i have query regarding simulation On Mon, May 13,
May 13
caasie mike
,
hopf.p...@gmx.de
2
May 13
setting parameter bounds for CRAB
Dear Caasie, thank you for bringing this up. You can set individual boundaries through the "
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setting parameter bounds for CRAB
Dear Caasie, thank you for bringing this up. You can set individual boundaries through the "
May 13
Michael Kurniawan
,
umar shifaqat
2
May 13
Possibility of Finding Steady State of Time-Dependent Linbladian Equation
Hi Micheal, Hope you are fine. I have the same question. Did you find any method to find steady state
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Possibility of Finding Steady State of Time-Dependent Linbladian Equation
Hi Micheal, Hope you are fine. I have the same question. Did you find any method to find steady state
May 13
SHISHIRA MAHUNTA
,
Paul Menczel
2
May 6
Query Regarding time dependent collapse operator while solving master equation by "mesolve"
Hi, There are various ways of specifying time-dependent operators in QuTiP. A full overview can be
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Query Regarding time dependent collapse operator while solving master equation by "mesolve"
Hi, There are various ways of specifying time-dependent operators in QuTiP. A full overview can be
May 6
KINGSHUK ADHIKARY
, …
umar shifaqat
5
Apr 29
Logarithmic negativity (LN)
I am also trying to calculate Logarithmic Negativity for my system. I am doing it in several
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Logarithmic negativity (LN)
I am also trying to calculate Logarithmic Negativity for my system. I am doing it in several
Apr 29
Aravindh Shankar
,
Éric Giguère
4
Apr 25
Quicker way to code multiple TLS
tensor can also take a list of qobj: H_coup = 0 for i in range(1, N): H_coup += tensor([sigmax()] + [
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Quicker way to code multiple TLS
tensor can also take a list of qobj: H_coup = 0 for i in range(1, N): H_coup += tensor([sigmax()] + [
Apr 25
KINGSHUK ADHIKARY
,
Éric Giguère
2
Apr 25
Kernel Dead
Hi Kingshuk Adhikary, This is usually errors in compiled code, mostly segfault. There are know cases
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Kernel Dead
Hi Kingshuk Adhikary, This is usually errors in compiled code, mostly segfault. There are know cases
Apr 25
Khamul
,
Éric Giguère
5
Apr 24
krylovsolve() error with same input as sesolve(), mesolve()
This indeed worked. For my purposes, I needed to set min_step to 1e-9. Thank you for the speedy
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krylovsolve() error with same input as sesolve(), mesolve()
This indeed worked. For my purposes, I needed to set min_step to 1e-9. Thank you for the speedy
Apr 24
Manish J. Thapa
,
Éric Giguère
5
Apr 19
Cubic_Spline replaced by Spline
I made a quick patch (https://github.com/qutip/qutip/pull/2397). It should work in the next release.
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Cubic_Spline replaced by Spline
I made a quick patch (https://github.com/qutip/qutip/pull/2397). It should work in the next release.
Apr 19
saaru darshini
Apr 17
ladder operator for quantum harmonic oscillator
How do I represent ak ∣n1 n2 n3 ,,,,nn⟩ = √nk-1 ∣n1 n2 n3 ,,,,nn⟩ and ak dagger ∣n1 n2 n3 ,,,,nn⟩= √
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ladder operator for quantum harmonic oscillator
How do I represent ak ∣n1 n2 n3 ,,,,nn⟩ = √nk-1 ∣n1 n2 n3 ,,,,nn⟩ and ak dagger ∣n1 n2 n3 ,,,,nn⟩= √
Apr 17
saaru darshini
,
Éric Giguère
7
Apr 8
type error when my essolve function runs
Thankyou Eric, this was very helpful. On Tuesday, April 9, 2024 at 12:49:58 AM UTC+5:30 eric.g...@
unread,
type error when my essolve function runs
Thankyou Eric, this was very helpful. On Tuesday, April 9, 2024 at 12:49:58 AM UTC+5:30 eric.g...@
Apr 8
Paul Menczel
Apr 3
Re: State evolution NOT starting at time t=0
Hi Khamul, The tlist that you pass to the solvers defines the time interval for the evolution. That
unread,
Re: State evolution NOT starting at time t=0
Hi Khamul, The tlist that you pass to the solvers defines the time interval for the evolution. That
Apr 3
Simon Cross
Mar 28
QuTiP 5.0.0
Greetings, QuTiP 5.0.0 has been released! QuTiP 5 is a redesign of many of the core components of
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QuTiP 5.0.0
Greetings, QuTiP 5.0.0 has been released! QuTiP 5 is a redesign of many of the core components of
Mar 28
Simon Cross
Mar 27
QuTiP 5 release tomorrow
Hello QuTiPers, On behalf of the QuTiP admin team I'm excited to announce that we will release
unread,
QuTiP 5 release tomorrow
Hello QuTiPers, On behalf of the QuTiP admin team I'm excited to announce that we will release
Mar 27
Or Golan
,
Paul Menczel
4
Mar 27
Deviation between analytical and numerical solutions
You were right - a higher cutoff fixed the problem. Thanks! On 27 Mar 2024, at 10:14, Or Golan <or
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Deviation between analytical and numerical solutions
You were right - a higher cutoff fixed the problem. Thanks! On 27 Mar 2024, at 10:14, Or Golan <or
Mar 27
Spiros Ts
Mar 23
Proposal for GSoC 24
Author: Spyridon Tsioupros Github account: https://github.com/Spiros7bit I wrote the proposal but
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Proposal for GSoC 24
Author: Spyridon Tsioupros Github account: https://github.com/Spiros7bit I wrote the proposal but
Mar 23
Johnny Lin
Mar 18
fidelity traced over a sub system
I am looking at optimisation for a state to state transfer of a subsystem of a Hamiltonian, with
unread,
fidelity traced over a sub system
I am looking at optimisation for a state to state transfer of a subsystem of a Hamiltonian, with
Mar 18
Vikas Chaudhary
Mar 16
Facing Problems In Test Case
Unable to run the test cases in (entropy.py) it show this error
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Facing Problems In Test Case
Unable to run the test cases in (entropy.py) it show this error
Mar 16
rochisha.a...@gmail.com
,
Simon Cross
2
Mar 12
Unknown behavior
`qutip.qeye(...)` is not a valid density matrix -- it is not normalized and has a trace of 2 instead
unread,
Unknown behavior
`qutip.qeye(...)` is not a valid density matrix -- it is not normalized and has a trace of 2 instead
Mar 12